diff options
Diffstat (limited to 'boost/signals2')
| -rw-r--r-- | boost/signals2/detail/variadic_slot_invoker.hpp | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/boost/signals2/detail/variadic_slot_invoker.hpp b/boost/signals2/detail/variadic_slot_invoker.hpp index ab1dfeea6c..59739b3f36 100644 --- a/boost/signals2/detail/variadic_slot_invoker.hpp +++ b/boost/signals2/detail/variadic_slot_invoker.hpp @@ -84,21 +84,21 @@ namespace boost typedef R result_type; template<typename Func, typename ... Args, std::size_t N> - R operator()(Func &func, BOOST_SIGNALS2_TUPLE<Args...> args, mpl::size_t<N>) const + R operator()(Func &func, const BOOST_SIGNALS2_TUPLE<Args...> & args, mpl::size_t<N>) const { typedef typename make_unsigned_meta_array<N>::type indices_type; return m_invoke<Func>(func, indices_type(), args); } private: template<typename Func, unsigned ... indices, typename ... Args> - R m_invoke(Func &func, unsigned_meta_array<indices...>, BOOST_SIGNALS2_TUPLE<Args...> args, + R m_invoke(Func &func, unsigned_meta_array<indices...>, const BOOST_SIGNALS2_TUPLE<Args...> & args, typename boost::disable_if<boost::is_void<typename Func::result_type> >::type * = 0 ) const { return func(BOOST_SIGNALS2_GET<indices>(args)...); } template<typename Func, unsigned ... indices, typename ... Args> - R m_invoke(Func &func, unsigned_meta_array<indices...>, BOOST_SIGNALS2_TUPLE<Args...> args, + R m_invoke(Func &func, unsigned_meta_array<indices...>, const BOOST_SIGNALS2_TUPLE<Args...> & args, typename boost::enable_if<boost::is_void<typename Func::result_type> >::type * = 0 ) const { @@ -110,9 +110,9 @@ namespace boost // only exists to quiet some unused parameter warnings // on certain compilers (some versions of gcc and msvc) template<typename Func> - R m_invoke(Func &func, unsigned_meta_array<>, BOOST_SIGNALS2_TUPLE<>, - typename boost::enable_if<boost::is_void<typename Func::result_type> >::type * = 0 - ) const + R m_invoke(Func &func, unsigned_meta_array<>, const BOOST_SIGNALS2_TUPLE<> &, + typename boost::enable_if<boost::is_void<typename Func::result_type> >::type * = 0 + ) const { func(); return R(); |